fix: Remove end_success_notification from upgrade workflow

[feanil]

Removed end_success_notification setting from workflow. That is not a valid parameter in the upstream file so the workflow fails.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.86%. Comparing base (5084c00) to head (165d58e).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #599   +/-   ##
=======================================
  Coverage   94.86%   94.86%           
=======================================
  Files          33       33           
  Lines        3350     3350           
  Branches      129      129           
=======================================
  Hits         3178     3178           
  Misses        154      154           
  Partials       18       18           

Flag	Coverage Δ
unittests	94.86% <ø> (ø)

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